 | | Report (volume) | | The Coal-Bearing Group in the Nenana Coal Field, Alaska By CLYDE WAHRHAFTIG, JACK A. WOLFE, ESTELLA B..._______________ _ Introduction _____ _ Coal-bearing group _ _____ __ Healy Creek Formation _________________________..._ Suntrana Formation _________________ Lignite Creek Formation __________________ _____ Grubstake Formation...column of the type sections of the formations of the coal-bearing group at Suntrana _______ 4. Geologic map...Map of the Nenana coal field and environs, central Alaska Range, showing the major coal basins and northern |  | | Report (volume) | | Coal Investigations in South-Central Alaska, 1944-46 By F. F. BARNES, CLYDE WAHRHAFTIG, C. A. HICKCOX...HEALY CREEK by'E'. H, COBS' GEOLOGICAL SURVEY BULLETIN 963 - E Mineral Resources of Alaska, 1945-46...----__--_------Coal .deposits on Healy and Lignite Creeks, Nenana coal field, Alaska, by "Clyde Wahrhaftig...______________ Birch Creek schist (pre-Cambrian)_________..._____!_ _^__. Coal-bearing formation (Te...(Tertiary)_______________________ Healy Creek........_.._._____._._.__..__._.._._._. Lignite Creek_______ |  | | Report (issue) | | THE U.S.GEOLOGICAL SURVEY IN ALASKA--1982 Programs GEOLOGICAL SURVEY CIRCULAR 867 Cover photographs...Division, Kachemak Bay area Stream sampling in Lignite Creek, south of Fairbanks Remote-sensing class instruction...Talkeetna C-6 quadrangle, Alaska Range THE U. S. GEOLOGICAL SURVEY IN ALASKA 1982 PROGRAMS Katherine...Survey and of the Minerals Management Service in Alaska. The Minerals Management Service was established...investigations in Alaska during 1981. CONTENTS Page The U.S. Geological Survey in Alaska • . • • • • • |
|
